Gearing for force-pumps



(No Model.)

A. F. NAGLE.

GEARING FOR FOR-GE PUMPS.

No. 309,155. Patented Dec. 9, 1884.

'Unrrnn Snares Parent @FFICE.

AUGUSTUS F. NAGLE, OF CHICAGO, ILLINOIS.

GEARING FOR FORCE 'PUMPS.

ffiP'flCIFICATION forming part of Letters Patent No. 309,155, datedDecember 9', 1884 Application filed May 2, 1884.

To all whom it may concern:

Be it known that I, AUGUSTUS F. NAGLE, a citizen of the United States,residing at Ohicago, in the countyof Cook and State of Illinois, haveinvented certain new and useful Improvements in Gearing for Force-Pumps;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form apart of this specification.

My present invention relates to force or pressure pumps; and itconsists, essentially, in the peculiar manner of connecting the plungerwith the driving mechanism, whereby the lateral thrust upon the plungeris balanced at all points of the stroke. To accomplish this the upperend of the plunger is provided with a beam secured at right anglestherewith, each end of the beam having a pin adapted to engage with alink or, connection, which in turn is connected with the crank-pin of ageared shaft, all as will be more fully hereinafter set forth.

The object of this invention is to produce a pump having a balancedpressure or thrust exterior to the packing at all portions of thestroke, and at the same time being more efficient, combined with reducedcost, as compared with the commonly-used pumps having crosshead andguides.

In the accompanying sheet of drawings, Figure 1 represents a frontelevation of a single-acting pump provided with my improvement, theplunger being shown about midway in its upward or suction stroke. Fig. 2represents a side view of the same.

The following is a detailed description of the invention A in thedrawings represents the frame or standard of the pump, to which all theparts are secured.

p is the bearing for the driving-shaft, the latter being provided withfast and loose pulleys G G and pinion E, as common.

p 1) represent bearings or boxes formed one on each side of the centerand at the top of said frame.

(No model.)

F F are gears secured to or niounted upon the shafts F, said gears beingof equal size, meshing together, and adapted to receive rotary motion bymeans of said pulley and pinion. Cranlepins h are secured to the gearsF, the location of the former corresponding to the stroke of theplunger.

13 is the pump-barrel, provided with inlet and outlet passages, a a, andcheck-valves '0 o, as common.

T represents the plunger working in said barrel. braced by a beam, H,the latter preferably be ing made in two parts and'secured together bypins 0 h h, the length of the beam being represented as corresponding tothe distance between the shafts F. Links I serveto connect said gearsand plunger. It is now evident that the revolution of the driving-shaftin the arrow direction imparts rotary motion to the shafts F by means ofsaid gears E F F, the latter in turn adapted to connect with the plungerby means of said links I, all as fully shown. It is further apparentthat by means of this improved device the thrust upon the plunger isbalanced laterally at all points of the stroke, thus adapting theplunger to move in a true vertical direction, thereby resultinginincreased efficiency and diminished cost.

I do not limit myself to the use of gears and beam having theproportionate ratio shown, as I contemplate making the beam-centers lessthan the distance between the gear-centers, thereby giving to thedownstroke, in case of great pressure, less angular thrust. Neither do Irestrict myself to the exact construction of the frame and adjacentparts represented herewith, as they may be modified without departingfrom the spirit of the invention; but, however, in any case, I desire toretain the de-. vice embodied by the two cranks moving in oppositedirections, and the plunger provided with means for connecting saidcranks for the purpose of balancing or neutralizing the lateral thrustof the plunger.

The upper end of the former is em- This device may be adapted for use indouble-acting pumps, or even in other machines susceptible of itsapplicationsuch, for instance, as presses working a reciprocatingplunger or die. I prefer in such cases to make the beam and plungerintegral.

IOO

Having thus described my invention, what I claim asnew, and desire tosecure by Letters Patent, isp 1. The device for converting rotary motioninto reciprocating motion herein described, consisting of twooppositely-revolving geared crank-shafts suitably mounted and driven, in

combination with the head or plunger having 3. The combination in aforce-pump provided with the barrel, valves, and frame, sub- 20stantially as herein shown, of the two oppositely-revolving crankgear-wheels F, links I, and plunger '1, the latter being secured to thebeam H, adapted to receive said links, the

whole arranged whereby the rotary motion of 25 said wheels F impartsreciprocating movement to the plunger, the thrust upon the latterthereby being balanced at every point of the stroke, as and for thepurpose set forth.

In testimony whereof I have affixed my sigo nature in presence of twowitnesses.

AUGUSTUS F. NAGLE.

Witnesses:

P. A. MONTGOMERY, W. L. BOUGHTON.

